Anet A8 2017 Y chain hotbed mount thin + crimp space

Applied ideas from https://www.thingiverse.com/thing:2431500 + https://www.thingiverse.com/thing:2037096 + a hole for hotbed crimp upgrade. Bend crimp downwards 90* to fit and route wires into chain. Have not printed but did prototype this change previously on the normal Y chain hotbed mount.

Print in ABS for heat tolerance.

(Countersink holes may not be concentric as I don't know how to line them up correctly in thinkercad yet.)